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David Walsh Blog

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    Amazing User Agent API with userstack

    We do our best to design and code websites so that they look and perform the way they should regardless of device or browser, but the truth is we sometimes we need to code for specific device, browser, or crawler. Whether it's a quick hack or...

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    JavaScript Labels

    No matter how long you've been a JavaScript developer, there will always be language features that you didn't know about until you saw them in a fringe piece of code. Your reaction generally is a bit like:One of those features I see developers quizically trying...

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    Colorized Brackets for IDE

    Coders treat their text editors and IDE's like fragile beings, and for good reason: we spend a ton of time in them and having our tweaks and extensions can make us incredibly productive for our personal workflows. I always love hearing about what extensions...

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    Git Checkout at Previous Timeframe

    In the past I've blogged about checking out branches created on a specific date as well as sorting git branches by date, but one frequent usage of git and dates is checking out a commit at a given time in the past.

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    Background Sync with Service Workers

    Service workers have been having a moment. In March 2018, iOS Safari began including service workers -- so all major browsers at this point support offline options. And this is more important than ever -- 20% of adults in the United States are without Internet at...

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    How to Change the WordPress Admin Login Logo

    There are numerous content management systems that thrive these days but none are as prolific as WordPress. Every client wants the ability to change their website at a moment's notice and they want to do it themselves, and again, WordPress is the best fit for that.

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    How to Change the WordPress Media Upload Directory

    One thing I've always missed about the "old" way of web development was the simplicity of FTP. No deploy scripts, no fuss: simple drag and drop of files and the files are there. I've used FTP for assets on this blog for over a decade but...

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    Goals for 2019

    Every turn of the year is a new opportunity to start over, set goals, and renew optimism that time can heal wounds and drive us to change and achieve. I did really well with my 2018 goals: I started a fun podcast with

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    How to Send an iMessage From Command Line

    As somewhat of a recluse, believe me when I say that text messages, instant messenger, and iMessage have relieved me of loads of anxiety and wasted time with short, meaningless voice chat. It's been a decade since these communication types have become popular so we've moved...

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    How to Add a User Stylesheet in Firefox

    While many like to complain about CSS these days, it's important to remember how amazing CSS is; the CSS language is:easy to learneasy to readeasy to writesimple to understandWeb developers and designers alike love that CSS allows us to take text/media and present it in...

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    How to Create a RetroPie on Raspberry Pi – Graphical Guide

    Today we get to play amazing games on our super powered game consoles, PCs, VR headsets, and even mobile devices.  While I enjoy playing new games these days, I do long for the retro gaming systems I had when I was a kid: the original Nintendo...

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    Conquering Impostor Syndrome

    Two years ago I documented my struggles with Imposter Syndrome and the response was immense.  I received messages of support and commiseration from new web developers, veteran engineers, and even persons of all experience levels in other professions.  I've even caught myself reading the post...

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    Being a Dev Dad

    I get asked loads of questions every day but I'm always surprised that they're rarely questions about code or even tech -- many of the questions I get are more about non-dev stuff like what my office is like, what software I use, and oftentimes...

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    JavaScript Promise API

    While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready?  Promises are becoming a big part of the JavaScript world...

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    7 Essential JavaScript Functions

    I remember the early days of JavaScript where you needed a simple function for just about everything because the browser vendors implemented features differently, and not just edge features, basic features, like addEventListener and attachEvent.  Times have changed but there are still a few functions each developer should...

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    I’m an Impostor

    This is the hardest thing I've ever had to write, much less admit to myself.  I've written resignation letters from jobs I've loved, I've ended relationships, I've failed at a host of tasks, and let myself down in my life.  All of those feelings were very...

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    fetch API

    One of the worst kept secrets about AJAX on the web is that the underlying API for it, XMLHttpRequest, wasn't really made for what we've been using it for.  We've done well to create elegant APIs around XHR but we know we can do better.  Our effort to...